<!DOCTYPE html>
 <html>
 <head>
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 <title>Examples</title>
 <meta name="description" content="">
 <meta name="keywords" content="">
 <script src="js/jquery-1.8.3.js" ></script>
 <script src="jquery.cookie.js"></script>
 <style type="text/css">
     * {margin: 0; padding: 0; font-family: "Microsoft Yahei";}
     .captcha-box {width: 360px; height: 34px; margin: 30px; padding: 30px; border: #956E6F 1px dashed; border-radius: 5px; background-color: #FAF2F2;}
     #mobile { float: left; width: 180px; height: 32px; border: #e5e5e5 1px solid; line-height: 32px; text-indent: 8px; outline: none;}
     #getting {float: left; height: 34px; margin-left: -1px; padding: 0 18px; text-align: center;  line-height: 34px; border: #e5e5e5 1px solid; background: linear-gradient(0deg, #f4f2f2 0%,#fbf9f9 100%); cursor: pointer; outline: none;}
 </style>
 <script>
     $(function(){
         /*仿刷新：检测是否存在cookie*/
         if($.cookie("captcha")){
             var count = $.cookie("captcha");
             var btn = $('#getting');
             btn.val(count+'秒后可重新获取').attr('disabled',true).css('cursor','not-allowed');
             var resend = setInterval(function(){
                 count--;
                 if (count > 0){
                     btn.val(count+'秒后可重新获取').attr('disabled',true).css('cursor','not-allowed');
                     $.cookie("captcha", count, {path: '/', expires: (1/86400)*count});
                 }else {
                     clearInterval(resend);
                     btn.val("获取验证码").removeClass('disabled').removeAttr('disabled style');
                 }
             }, 1000);
         }
         /*点击改变按钮状态，已经简略掉ajax发送短信验证的代码*/
         $('#getting').click(function(){
             var btn = $(this);
             var count = 60;
             var resend = setInterval(function(){
                 count--;
                 if (count > 0){
                     btn.val(count+"秒后可重新获取");
                     $.cookie("captcha", count, {path: '/', expires: (1/86400)*count});
                 }else {
                     clearInterval(resend);
                     btn.val("获取验证码").removeAttr('disabled style');
                 }
             }, 1000);
             btn.attr('disabled',true).css('cursor','not-allowed');
         });
     });
 </script>
 </head>
 <body>
     <div class="captcha-box">
         <input type="text" id="mobile" maxlength="11" placeholder="请输入手机号码">
         <input type="button" id="getting" value="获取验证码">
     </div>
 </body>
 </html>